Perl Dictionary Convert

[Tom Grove]

I have a server program that I am writing an interface to and it returns
data in a perl dictionary. Is there a nice way to convert this to
something useful in Python?

Here is some sample data:

200 data follow
{
Calendar = {
Access = { anyone = lr;};
Class = IPF.Appointment ;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
Contacts = {
Class = IPF.Contact;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
}

-Tom

[faulkner]

Re: Perl Dictionary Convert

data.replace('= ', ':').replace('; ', ',')
then eval in a namespace object whose __getitem__ method returns its
argument unchanged.


class not_str(str): # take care of that IPF.Contact
def __getattr__(sel f, attr):return self + '.' + attr

class not_dict(dict):
def __getitem__(sel f, name):return not_str(name)

eval(data.repla ce('=',':').rep lace(';', ','), not_dict())



Tom Grove wrote:

I have a server program that I am writing an interface to and it returns
data in a perl dictionary. Is there a nice way to convert this to
something useful in Python?
>
Here is some sample data:
>
200 data follow
{
Calendar = {
Access = { anyone = lr;};
Class = IPF.Appointment ;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
Contacts = {
Class = IPF.Contact;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
}
>
-Tom

[Marc 'BlackJack' Rintsch]

Re: Perl Dictionary Convert

In <mailman.7824.1 152131388.27775 .python-list@python.org >, Tom Grove
wrote:

I have a server program that I am writing an interface to and it returns
data in a perl dictionary. Is there a nice way to convert this to
something useful in Python?

You could write a little parser with pyparsing:

source = """\
{
Calendar = {
Access = { anyone = lr;};
Class = IPF.Appointment ;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
Contacts = {
Class = IPF.Contact;
Messages = 0;
Size = 0;
UIDNext = 1;
UIDValidity = 287898056;
Unseen = 0;
};
}
"""

from pyparsing import alphas, alphanums, nums, Dict, Forward, Group, \
Literal, OneOrMore, Suppress, Word

OPEN_BRACE = Suppress('{')
CLOSE_BRACE = Suppress('}')
ASSIGN = Suppress('=')
STATEMENT_END = Suppress(';')
identifier = Word(alphas, alphanums + '.')
number = Word(nums).setP arseAction(lamb da s, loc, toks: int(toks[0]))
dictionary = Forward()
value = identifier | number | dictionary
item = Group(identifie r + ASSIGN + value + STATEMENT_END)
dictionary << Dict(OPEN_BRACE + OneOrMore(item) + CLOSE_BRACE)

result = dictionary.pars eString(source)
print result['Contacts']['Class']

Output is: IPF.Contact

Ciao,
Marc 'BlackJack' Rintsch